drivers/phy/phy-snps-eusb2.c

11 #include <linux/phy/phy.h>
158 	int (*phy_init)(struct phy *p);
164 	struct phy *phy;
175 	struct phy *repeater;
180 static int snps_eusb2_hsphy_set_mode(struct phy *p, enum phy_mode mode, int submode)
182 	struct snps_eusb2_hsphy *phy = phy_get_drvdata(p);
184 	phy->mode = mode;
186 	return phy_set_mode_ext(phy->repeater, mode, submode);
203 static void qcom_eusb2_default_parameters(struct snps_eusb2_hsphy *phy)
206 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_9,
211 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_9,
216 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_9,
221 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_8,
226 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_8,
246 static int exynos_eusb2_ref_clk_init(struct snps_eusb2_hsphy *phy)
249 	unsigned long ref_clk_freq = clk_get_rate(phy->ref_clk);
259 		dev_err(&phy->phy->dev, "unsupported ref_clk_freq: %lu\n", ref_clk_freq);
263 	snps_eusb2_hsphy_write_mask(phy->base, EXYNOS_USB_PHY_HS_PHY_CTRL_COMMON,
267 	snps_eusb2_hsphy_write_mask(phy->base, EXYNOS_USB_PHY_CFG_PLLCFG0,
272 	snps_eusb2_hsphy_write_mask(phy->base, EXYNOS_USB_PHY_CFG_PLLCFG1,
283 static int qcom_eusb2_ref_clk_init(struct snps_eusb2_hsphy *phy)
286 	unsigned long ref_clk_freq = clk_get_rate(phy->ref_clk);
296 		dev_err(&phy->phy->dev, "unsupported ref_clk_freq: %lu\n", ref_clk_freq);
300 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_HS_PHY_CTRL_COMMON0,
304 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_2,
308 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_3,
312 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_3,
318 static int exynos_snps_eusb2_hsphy_init(struct phy *p)
320 	struct snps_eusb2_hsphy *phy = phy_get_drvdata(p);
323 	snps_eusb2_hsphy_write_mask(phy->base, EXYNOS_USB_PHY_HS_PHY_CTRL_RST,
326 	fsleep(50); /* required after holding phy in reset */
328 	snps_eusb2_hsphy_write_mask(phy->base, EXYNOS_USB_PHY_HS_PHY_CTRL_COMMON,
332 	ret = exynos_eusb2_ref_clk_init(phy);
337 	snps_eusb2_hsphy_write_mask(phy->base, EXYNOS_PHY_CFG_TX,
341 	snps_eusb2_hsphy_write_mask(phy->base, EXYNOS_USB_PHY_UTMI_TESTSE,
345 	snps_eusb2_hsphy_write_mask(phy->base, EXYNOS_USB_PHY_HS_PHY_CTRL_RST,
348 	snps_eusb2_hsphy_write_mask(phy->base, EXYNOS_USB_PHY_HS_PHY_CTRL_COMMON,
351 	snps_eusb2_hsphy_write_mask(phy->base, EXYNOS_USB_PHY_HS_PHY_CTRL_RST,
367 static int qcom_snps_eusb2_hsphy_init(struct phy *p)
369 	struct snps_eusb2_hsphy *phy = phy_get_drvdata(p);
372 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG0,
375 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_UTMI_CTRL5, POR, POR);
377 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_HS_PHY_CTRL_COMMON0,
380 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_APB_ACCESS_CMD,
383 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_UTMI_PHY_CMN_CTRL0, TESTBURNIN, 0);
385 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_FSEL_SEL,
389 	ret = qcom_eusb2_ref_clk_init(phy);
393 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_1,
397 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_4,
401 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_4,
405 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_5,
409 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_6,
413 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_5,
417 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_HS_PHY_CTRL2,
421 	qcom_eusb2_default_parameters(phy);
423 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_HS_PHY_CTRL2,
427 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_UTMI_CTRL0, SLEEPM, SLEEPM);
429 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_HS_PHY_CTRL_COMMON0,
432 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_HS_PHY_CTRL_COMMON0,
435 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_UTMI_CTRL5, POR, 0);
437 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_HS_PHY_CTRL2,
440 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG0,
456 static int snps_eusb2_hsphy_init(struct phy *p)
458 	struct snps_eusb2_hsphy *phy = phy_get_drvdata(p);
461 	ret = regulator_bulk_enable(ARRAY_SIZE(phy->vregs), phy->vregs);
465 	ret = phy_init(phy->repeater);
471 	ret = clk_bulk_prepare_enable(phy->data->num_clks, phy->clks);
477 	ret = reset_control_assert(phy->phy_reset);
485 	ret = reset_control_deassert(phy->phy_reset);
491 	ret = phy->data->phy_init(p);
498 	clk_bulk_disable_unprepare(phy->data->num_clks, phy->clks);
500 	phy_exit(phy->repeater);
502 	regulator_bulk_disable(ARRAY_SIZE(phy->vregs), phy->vregs);
507 static int snps_eusb2_hsphy_exit(struct phy *p)
509 	struct snps_eusb2_hsphy *phy = phy_get_drvdata(p);
511 	clk_bulk_disable_unprepare(phy->data->num_clks, phy->clks);
513 	regulator_bulk_disable(ARRAY_SIZE(phy->vregs), phy->vregs);
515 	phy_exit(phy->repeater);
531 	struct snps_eusb2_hsphy *phy;
533 	struct phy *generic_phy;
537 	phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
538 	if (!phy)
541 	phy->data = device_get_match_data(dev);
542 	if (!phy->data)
545 	phy->base = devm_platform_ioremap_resource(pdev, 0);
546 	if (IS_ERR(phy->base))
547 		return PTR_ERR(phy->base);
549 	phy->phy_reset = devm_reset_control_get_optional_exclusive(dev, NULL);
550 	if (IS_ERR(phy->phy_reset))
551 		return PTR_ERR(phy->phy_reset);
553 	phy->clks = devm_kcalloc(dev, phy->data->num_clks, sizeof(*phy->clks),
555 	if (!phy->clks)
558 	for (i = 0; i < phy->data->num_clks; ++i)
559 		phy->clks[i].id = phy->data->clk_names[i];
561 	ret = devm_clk_bulk_get(dev, phy->data->num_clks, phy->clks);
564 				     "failed to get phy clock(s)\n");
566 	phy->ref_clk = NULL;
567 	for (i = 0; i < phy->data->num_clks; ++i) {
568 		if (!strcmp(phy->clks[i].id, "ref")) {
569 			phy->ref_clk = phy->clks[i].clk;
574 	if (IS_ERR_OR_NULL(phy->ref_clk)) {
575 		ret = phy->ref_clk ? PTR_ERR(phy->ref_clk) : -ENOENT;
580 	num = ARRAY_SIZE(phy->vregs);
582 		phy->vregs[i].supply = eusb2_hsphy_vreg_names[i];
584 	ret = devm_regulator_bulk_get(dev, num, phy->vregs);
589 	phy->repeater = devm_of_phy_optional_get(dev, np, NULL);
590 	if (IS_ERR(phy->repeater))
591 		return dev_err_probe(dev, PTR_ERR(phy->repeater),
596 		dev_err(dev, "failed to create phy: %d\n", ret);
600 	dev_set_drvdata(dev, phy);
601 	phy_set_drvdata(generic_phy, phy);
612 		.compatible = "qcom,sm8550-snps-eusb2-phy",
615 		.compatible = "samsung,exynos2200-eusb2-phy",
632 MODULE_DESCRIPTION("Synopsys eUSB2 HS PHY driver");